Head to head
2
Hard
1
1
Clay
0
Stefan Koubek's wins on the left · Alberto Martin's on the right · bar lengths share one scale
All meetings (4)
| 2004 | Vienna | Hard | R32 | Stefan Koubek | 7-5 6-1 |
| 2004 | Miami Masters | Hard | R128 | Stefan Koubek | 2-6 7-6(3) 6-0 |
| 2004 | Auckland | Hard | R32 | Alberto Martin | 6-4 6-4 |
| 1999 | Atlanta | Clay | QF | Stefan Koubek | 7-5 6-2 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.